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H. W; MEYER FLUSHING SYSTEM Dec. 6, 1927. I 1,652,038

Filed Aug. 9. 1926 INVENTOR.

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Patented Dec. 6, 1927..

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I Application fiieanu ust 9,4926;.Seriar-NOQ12220571- {A invention relates to a flushing system for'irrigation-and the like lines.

The chiefobject of the invention is to provide an irrigation line with an automatic flush= valve whereby the system will permit of flushing, and permit of operation: without removal .of'said valve or manual actuation thereof. 7

' supports a valve 15.

'Iliechief feature of the invention consists in the particular formation of the valve and its association in an irrigation system, where-1 by said system will, under normal conditions, be self-cleaning, selfdraining and seltflushing and under other normal conditions will permit of irrigation.

. Inthe drawings 10 indicates a header and a branch 11 controlled by valve 12 communicating with irrigation conduit 13 including a plurality of discharge outlets or nozzles 14 which herein are shown positioned above the bottom of the conduit 13 andherein are specifically shown positioned at the top of the conduit. Conduit 13 is inclined; from the supply end ,to the low pressure end which Valve 15 includes an opening 16 receiving the co'nduit13 and by which said conduit communicates with a valve chamber 17 having a transversely posltioned opening 18 commumcating there with, said opening being defined bya seat 19. 'Mounted within the chamber is a valve 20 for engaging seat 19 and closing openlng 18. A suitable guide 21 aligns one end of the stem 22 carrying Valve 20 and thebear ring 23 closing the opposite end of the chamber also aligns said stem. To permit removal of the valve the cap portion 24 is provided which includestheseat 19 and the opening 18 defined thereby. The valve 20 is adjustably mounted "on stem 22 and-herein said stem is shown comprised of two parts connected by a coupling 25. and the valve is adjustably mounted by engaging the end i of the coupling 25 and being retained in p0 sition by a washer or disc plate 26 and the locking,-

27,} The projecting end of the stem -22 is surrounded by a, coil spring 28, the tension of which is adjusted by a retainbody and encloses the aforesaid and serves as a.- stop.-

The operation of the irrigating-system is as follows: When it is desiredto irrigate greenhouses or culture plots waterjis sup- I plied under pressure to branch 11 by line 10 y and when the valve 12. is opened thepressurc discharges through nozzles 14 provided the end ot the conduit 13 is -closed. ;Heretofore' it has been the practice to provide aplug or a valve at the endof this line for the purpose of draining the line and for the purpose of cleaning the line. Water usually contains considerable sediment and this is ,deposited in the conduit 13 if the line were not drained or flushed. The aforesaid operation if line 13 is a long one and it generally is, requires movement of the operator from one end of the conduit'to the other and then back again. The present invention is automatic and requires only the operation of the valve 12, the same being as follows:

ing-and adjusting nut29. A- suitable cap 1 [has threaded engagement withthe valve .When the valve 12 is partially cracked or 7 opened, low pressure liquid is applied to conduit 13 and runs down along the bottom thereof and. since valve 20 is normally maintained in the position shown in Fig. 2 by spring 28, the water or liquid discharges through opening 18, thus flushing line 13. Then it is desired to irrigate, valve 12 is opened wide and full liquid pressure is applied toconduit' 13 which as soon as the stre'am of water rises above the level of the valve 20 as shown in Fig. 2, serves to create a pressure thereon tending to close said valve in opposition to spring 28 and as the pipe 13 fills under pressure, chamber 17 fills under pressure and valve 20 is seated.

When this occursthe liquid such as water,

is projected from the nozzles 14 vundergreat pressure and serves for irrigating and at the same time cleans said nozzles of any collection that'niight have been. included therein. When the desired amount of irrigation has occurred valve'12 is closed which reduces pressure in line 13 and the spring '28 raises said valve and permits the escape of water in chamber 17 and. pipe 13', thereby draining line, thus eliminating the greater purtiee of the possibility of deposition or sedimentation of said line 13. hen it is desired to clean line 13, valve 12 is maintained in par tially cracked or open positionas previously indicated.

The invention claimed is: i 1. An automatic flush valve comprisin an integral chambered body portion inclu ing a pair of communicating transverse openings connected by the chamber therein, a valve rod coaxial with one of said openings and extending through said chamber and projecting beyond the sameand slidably supported thereby, a spring concentric with the rod and normally projecting the rod in one direction, a cap supported by the body and engageable by the projected end of said rod for limiting the spring actuated movement thereof and completely enclosing the projected end of the rod, a valve seat con centric with the rod and positioned in the rod receiving opening below the level of the transverse opening, and valve means supported by the rod between the valve seat and the transverse opening and normally maintamable by and position thereof respectively. a

4. A device as defined. by claim 1, characterized by the valve seat being annular and lying in a plane transverse to the valve movement. and the valve including an annular sealing cushion backed by a supporting disc at least equal to the valveiopemng.

In witness whereof, I have hereunto aflixed my signature.

HENRY W. MEYER.

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